CVE catalog
CVE-2026-33489
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The lo
- Severity
- High · CVSS 8.2
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
A flaw was found in CoreDNS. An unauthorized remote client can exploit a vulnerability in the transfer plugin's Access Control List (ACL) stanza selection. This occurs when both a parent zone and a more-specific subzone are configured, and the longestMatch() function incorrectly uses a lexicographic string comparison. As a result, a permissive parent-zone transfer rule can override a restrictive subzone rule, allowing the client to perform zone transfers (AXFR/IXFR) for the subzone and retrieve its full zone contents. This leads to the disclosure of sensitive information. CoreDNS: github.com/coredns/coredns: CoreDNS: Information disclosure via incorrect ACL stanza selection in transfer plugin The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | coredns | Not reported | 1.14.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | coredns | cpe | Not reported | 1.14.3 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_20703-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-33489]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33489.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1283.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]